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Grade 5 Titanium vs. AISI 317 Stainless Steel

Grade 5 titanium belongs to the titanium alloys classification, while AISI 317 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade 5 titanium and the bottom bar is AISI 317 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 8.6 to 11
35 to 55
Fatigue Strength, MPa 530 to 630
250 to 330
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
79
Shear Strength, MPa 600 to 710
420 to 470
Tensile Strength: Ultimate (UTS), MPa 1000 to 1190
580 to 710
Tensile Strength: Yield (Proof), MPa 910 to 1110
250 to 420

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 330
590
Melting Completion (Liquidus), °C 1610
1400
Melting Onset (Solidus), °C 1650
1380
Specific Heat Capacity, J/kg-K 560
470
Thermal Conductivity, W/m-K 6.8
15
Thermal Expansion, µm/m-K 8.9
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 36
21
Density, g/cm3 4.4
7.9
Embodied Carbon, kg CO2/kg material 38
4.3
Embodied Energy, MJ/kg 610
59
Embodied Water, L/kg 200
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 110
210 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 3980 to 5880
150 to 430
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 62 to 75
20 to 25
Strength to Weight: Bending, points 50 to 56
20 to 22
Thermal Diffusivity, mm2/s 2.7
4.1
Thermal Shock Resistance, points 76 to 91
12 to 15

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 0
18 to 20
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
58 to 68
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0
11 to 15
Nitrogen (N), % 0 to 0.050
0 to 0.1
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 87.4 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Yttrium (Y), % 0 to 0.0050
0
Residuals, % 0 to 0.4
0